18205515

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{199}}^1$

素因数の和:336

約数の個数: 48

約数和(自身を含む): 33696000

約数和(自身を除く): 15490485

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 107, 171, 199, 285, 321, 535, 597, 855, 963, 995, 1605, 1791, 2033, 2985, 3781, 4815, 6099, 8955, 10165, 11343, 18297, 18905, 21293, 30495, 34029, 56715, 63879, 91485, 106465, 170145, 191637, 319395, 404567, 958185, 1213701, 2022835, 3641103, 6068505, 18205515]

約数ペア:

[(1, 18205515), (3, 6068505), (5, 3641103), (9, 2022835), (15, 1213701), (19, 958185), (45, 404567), (57, 319395), (95, 191637), (107, 170145), (171, 106465), (199, 91485), (285, 63879), (321, 56715), (535, 34029), (597, 30495), (855, 21293), (963, 18905), (995, 18297), (1605, 11343), (1791, 10165), (2033, 8955), (2985, 6099), (3781, 4815)]